11.5
Shutting down for maintenance / troubleshooting
DANGER
Lethal voltages are still present in the connections and cables of the device even after the device has
been switched off and disconnected!
Severe injuries or death may occur if the cables and/or terminals/busbars in the device are touched.
Only appropriately qualified electricians authorised by the mains supply network operator are permitted to
open and maintain the device.
›
Comply with all safety regulations and current technical connection specifications of the responsible
power supply company.
NOTE: Shutdown sequence
1 If possible, shut down the device via EMS.
2 Switch off the grid voltage by turning off the external circuit breakers.
3 Enable the DC side via the external DC switch.
»
After shutdown, wait 5 minutes before opening the device.
Shutdown sequence
1 Switch off the grid voltage by turning off the external circuit breakers.
2 Disconnect the DC side using the external DC isolator switch.
DANGER! The DC cables are still live
»
After shutdown, wait 5 minutes before opening the device.
11.6
Replace DC fuse
DANGER
Electric shock due to live parts under the protective cover.
Removing the protective cover can result in potentially fatal consequences due to live components.
›
›
Only remove and attach the DC protective cover on the 4 bolts.
↻
Ensure there is no DC voltage present.
1 Variants L, XL: Unfasten the protective cover using the 4 bolts and place to one
side [ T15].
2 Variant M: Open the contact protection on the fuse holder.
3 Remove a DC fuse (F1) from the terminals with NH plug-in grip.
4 Insert new specified DC fuse with the NH plug-in grip into the fuse holder [size
L65 mm].
5 Variants L, XL: Fit the protective cover and secure using 4 bolts [ T15 / 2.3
Nm].
6 Variant M: Close the contact protection on the fuse holder.
7 DC fuse replaced. Continue connecting the battery.
1
3
2
4
Fig. 55:
Insert DC fuse
1
DC fuse (F1)
2
Terminals
3
DC fuse holder
4
DC connection
KACO blueplanet gridsave 50.0TL3-S
Page 74
EN